544 A. HESSELBO 



500550 metres above sea-level. Only sterile specimens have been 

 found. 



326. Hylocomium rugosum (Ehrh.) De Not. 



Widely distributed on dry grass or moss-grown slopes or flats, 

 usually mixed with other Bryophyta such as Hylocomium parietimim, H. 

 prolifemm, H, squarrosum, Rhacomitrium hypnoides, Dicranum scoparinm. 

 Ptilidinm ciliare, etc., rarely unmixed in large mats. It has the same 

 altitudinal distribution as H. triqiietrnm , and hardly ascends higher 

 than about 300400 metres above sea-level. Only sterile specimens 

 have been found. 



